The LILO bootloader has long been deprecated, in favour of GRUB,
however it still has an install base on old systems that remain in
production. The /etc/lilo.conf file contains its configuration. After
any change in that file, it is necessary to reinstall LILO, by simply
running lilo.
Each installed kernel version will have a line in this file, beginning
with image=, followed by the path to the kernel file. For example:
image=/boot/bzImage-2.6.28